Hitachi UC 24YC Mode D'emploi page 7

(2) Regarding the temperature of the rechargeable battery.
The temperatures for rechargeable batteries are as shown in the table below, and batteries that have become
hot should be cooled for a while before being recharged.
Table 2 Recharging of batteries that have become hot
Rechargeable batteries
EB7, EB9
EB12
EB7S, EB7G
EB9S, EB9G, EB9B, EB9M, EB924
EB12S, EB12G, EB12B, EB12M, EB1224
EB14S, EB14B, EB1424, EB18B, EB24B
EB9H, EB12H, EB14H, EB930H, EB1230H,
EB1430H, EB2430H
(3) Regarding recharging time
Table 3 shows the recharging time required according to the type of battery.
Table 3 Recharging time (approx. min.) at 20°C
Battery
voltage
1.3 Ah
(V)
7.2 V EB7 13 min. EB7G
EB7S
9.6 V EB9 13 min. EB9G
EB9S
12 V EB12 13 min. EB12G 17 min. EB12B
EB12S
14.4 V EB14S 13 min.
18 V
24 V
: Ni-MH batteries
NOTE: The recharging time may vary according to the ambient temperature and the power supply voltage.
4. Disconnect the charger's power cord from the
receptacle.
5. Hold the charger firmly and pull out the battery.
NOTE
Be sure to pull out the battery from the charger after use,
and then keep it.
Regarding electric discharge in case of new batteries,
etc.
As the internal chemical substance of new batteries
and batteries that have not been used for an
extended period is not activated, the electric
discharge might be low when using them the first
and second time. This is a temporary phenomenon,
and normal time required for recharging will be
restored by recharging the batteries 2-3 times.
How to make the batteries perform longer.
(1) Recharge the batteries before they become
completely exhausted.
When you feel that the power of the tool becomes
weaker, stop using the tool and recharge its battery.
Temperatures at which the battery can be recharged
Battery capacity (Ah)
1.7 Ah 2.0 Ah
17 min.
17 min. EB9B 20 min. EB9H
EB9M
20 min. EB12H
EB12M
EB14B 20 min. EB14H
EB18B 30 min.
EB24B 30 min.
(2) Avoid recharging at high temperatures.
CAUTION
-5°C – 40°C
-5°C – 60°C
0°C – 45°C
2.2 Ah 2.4 Ah
30 min. EB924
30 min. EB1224 24 min. EB1230H 36 min.
30 min. EB1424 24 min. EB1430H 36 min.
If you continue to use the tool and exhaust the
electric current, the battery may be damaged and
its life will become shorter.
A rechargeable battery will be hot immediately after
use. If such a battery is recharged immediately after
use, its internal chemical substance will deteriorate,
and the battery life will be shortened. Leave the
battery and recharge it after it has cooled for a
while.
If the battery is charged while it is heated because
it has been left for a long time in a location subject
to direct sunlight or because the battery has just
been used, the pilot lamp of the charger lights up
green. In such a case, first let the battery cool, then
start charging.
When the pilot lamp flickers in red (at 0.2-seconds
intervals), check for and take out any foreign objects
in the charger's battery installation hole. If there are
no foreign objects, it is probable that the battery
or charger is malfunctioning. Take it to your
authorized Service Center.
English
3.0 Ah
24 min. EB930H 36 min.
EB2430H 60 min.
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